You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-07-30 19:23:07 +03:00
MCOL-4530: common conjuction top rewrite (#2673)
Added logical transformation of the execplan::ParseTrees with the taking out the common factor in expression of the form "(A and B) or (A and C)" for the purposes of passing a TPCH 19 query. Co-authored-by: Leonid Fedorov <leonid.fedorov@mariadb.com>
This commit is contained in:
40
dbcon/execplan/rewrites.h
Normal file
40
dbcon/execplan/rewrites.h
Normal file
@ -0,0 +1,40 @@
|
||||
/* Copyright (C) 2022 MariaDB Corporation
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; version 2 of
|
||||
the License.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
MA 02110-1301, USA. */
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <parsetree.h>
|
||||
#include <treenode.h>
|
||||
#include <simplefilter.h>
|
||||
|
||||
namespace execplan
|
||||
{
|
||||
|
||||
#define debug_rewrites false
|
||||
|
||||
execplan::OpType oppositeOperator(execplan::OpType op);
|
||||
|
||||
struct NodeSemanticComparator
|
||||
{
|
||||
bool operator()(execplan::ParseTree* left, execplan::ParseTree* right) const;
|
||||
};
|
||||
|
||||
// Walk the tree and find out common conjuctions
|
||||
template<bool stableSort = false>
|
||||
execplan::ParseTree* extractCommonLeafConjunctionsToRoot(execplan::ParseTree* tree);
|
||||
|
||||
} // namespace execplan
|
Reference in New Issue
Block a user